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United States
South Arturo Mine (Carlin Complex)

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 Location:
43 km NW from Carlin, Nevada, United States

  Regional Office:
1655 Mountain City Hwy
Elko
Nevada, United States
89801
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WebsiteWeb
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  • Geology
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  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Mine Life2031
The Carlin Complex has four major open pit operations including Goldstrike, Gold Quarry, Goldstar (part of the Genesis/Tri-Star pits), and South Arturo (which returned to production in December 2022).


Owners

Source: p. 22,28
CompanyInterestOwnership
Newmont Corp. 38.5 % Indirect
Barrick Gold Corp. 61.5 % Indirect
Nevada Gold Mines LLC (operator) 100 % Indirect
In October 2021, through an asset exchange agreement with i-80 Gold Corp. (“i-80 Gold”), Nevada Gold Mines acquired the 40% interest in South Arturo that Nevada Gold Mines did not already own in exchange for the Lone Tree and Buffalo Mountain properties and infrastructure which were in care and maintenance at the time.

Nevada Gold Mines is operated by Barrick Gold Corporation and is a joint venture between Barrick (61.5%) and Newmont (38.5%).

Contractors

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Deposit Type

  • Carlin-type
  • Carbonate hosted
  • Breccia pipe / Stockwork


Summary:

The South Arturo Mine is located in the northern end of the Carlin Trend, a 40 mile-long north-northwest alignment of sedimentary rock-hosted gold deposits. These deposits are generally known as Carlin-type deposits named after the Carlin deposit. More than 50 million ounces of gold have been mined from the Carlin Trend since 1980. Characteristically, the gold mineralization in the Carlin-type gold deposits is dispersed, micron-sized, and found commonly on the rims of pyrite grains in predominately carbonate-bearing host rocks. Decalcification, silicification, and dolomitization are the most dominant alteration features. Generally, there is negligible base metal content, low silver to gold ratios, and a geochemical enrichment in arsenic, antimony and mercury. The South Arturo gold-silver deposits can be divided into five mineralized areas. These areas are the South Arturo, West Button Hill, Southwest Dee pit, Deep North, and Hinge. The majority of these deposits are classified as “Meikle Type” breccia hosted Carlin type deposits. A complex set of breccias occur at the upper contact of the Bootstrap limestone. These breccias can be generalized into four basic types: silicified heterolithic breccias, silica-Sulfide breccia, dolomite breccia, and cavity- fill breccias. While mineralization is widespread throughout the South Arturo Mine area, localized high-grade gold mineralization drives the economics and mine locations. South Arturo The northern extent of South Arturo minera ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Carlin Complex has four major open pit operations including Goldstrike, Gold Quarry, Goldstar (part of the Genesis/Tri-Star pits), and South Arturo (which returned to production in December 2022).

The South Arturo Project includes the completed east lobe Phase 2 (Button Hill) open pit and the active El Niño underground mine at the bottom of the Phase 2 pit.

The open pits are mined with a conventional shovel/truck operation. The mining equipment fleet and support infrastructure is shared with Goldstrike.

Mining benches are 20-feet high in mineralized areas and 40 feet in waste. Haulage ramps have a maximum gradient of +/-10% and are 140-feet wide including the safety berm. Single lane ramps are 80-feet wide and are planned for the very lowest benches. The minimum mining width is 350-feet.

The mine operates 24 hours per day 7 days a week. Total material moved per day averages 135,000 tons with both shovels operating.


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnitsAvg. Annual (Projected)LOM (Projected)
Gold koz 38664
All production numbers are expressed as metal in doré.


Reserves at December 1, 2020:

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven & Probable Stockpiles 200 kt Gold 2.54 g/t 41 koz
Proven & Probable In-Situ (OP) 8,685 kt Gold 2.77 g/t 772.8 koz
Proven & Probable Stockpiles 200 kt Silver 4.44 g/t 72.5 koz
Proven & Probable In-Situ (OP) 8,685 kt Silver 16.27 g/t 4,543 koz
Measured & Indicated Stockpiles 1,775 kt Gold 0.55 g/t 31 koz
Measured & Indicated In-Situ (OP) 48,058 kt Gold 1.18 g/t 1,823 koz
Measured & Indicated Stockpiles 1,775 kt Silver 0.44 g/t 25 koz
Measured & Indicated In-Situ (OP) 48,058 kt Silver 6.39 g/t 9,880 koz
Inferred In-Situ (OP) 25,158 kt Gold 0.95 g/t 768.8 koz
Inferred In-Situ (OP) 25,158 kt Silver 5.47 g/t 4,425 koz



Proposed Heavy Mobile Equipment as of December 1, 2020:
HME TypeModelSizeQuantity
Dozer
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Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 28, 2023
....................... Subscription required ....................... Subscription required Subscription required Jul 28, 2023
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Management Discussion & Analysis 2023
Annual Information Form 2022
Annual Report 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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